RE: Barley Straw explanation

From: Rand Nicholson (
Date: Fri Jun 25 1999 - 03:02:23 PDT

Date: Fri, 25 Jun 1999 15:02:23 +0500
From: Rand Nicholson <>
Message-Id: <aabcdefg2329$foo@default>
Subject: RE: Barley Straw explanation

>> Gez, this is taking me back a few decades, which means if I remember
>> correctly, 0.45 um is the pore size used to filter solutions to sterilize
>> them. Might that be a reason?
> Possibly, I really don't know for sure. I know nowadays we use
>0.22um filters for sterilizing solutions. When I work with bacteria, the
>majority are caught on this size filter. The 0.45um one still lets up to
>50% of them get through. Then there are the viruses, we use 0.02um ones
>for those guys. Good thing it's only 1ml of water we filter!

Sounds interesting Chris. Could you send everybody on the List one of each?
A bacteria and a virus? I'm building a wee tank out of Buckyballs.

Rand ....

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